Fix solr env id, support real world environment.
Fixing pages context.
Fix pages.
Fix finding default solr searcher.
Merge branch '5580_fix_solr_env' of github.com:openscholar/openscholar into 5580_fix_solr_env

Conflicts:
	openscholar/modules/os_features/os_pages/os_pages.info
Merge branch 'SCHOLAR-3.x' into 5580_fix_solr_env
Merge pull request #5614 from openscholar/5580_fix_solr_env

Minor Fixes - solr env id and browse/pages